Create birthday set command.

cogs/commands/__init__.py

@@ -2,6 +2,7 @@
 
 from nextcord.ext import commands
 
+from cogs.commands.birthday import BirthdayCog
 from cogs.commands.hi import HiCog
 
 
@@ -9,4 +10,5 @@ from cogs.commands.hi import HiCog
 # It is necessary to add these functions to the bot.
 def setup(bot: commands.Bot) -> None:
     """Add all command classes to bot."""
+    bot.add_cog(BirthdayCog())
     bot.add_cog(HiCog(bot))

cogs/commands/birthday.py

@@ -0,0 +1,67 @@
+"""Contains commands for birthday feature."""
+
+from datetime import datetime
+
+import nextcord
+from nextcord.ext import commands
+from pytz import UTC
+from sqlmodel import Session, select
+
+from database.db import engine
+from database.models import UserBirthday
+from main import birthday_list
+
+
+class BirthdayCog(commands.Cog, name="Birthday Commands"):
+    """Class holds birthday commands."""
+
+    @nextcord.slash_command()
+    async def birthday(self, interaction: nextcord.Interaction) -> None:
+        """Parent slash command for birthday. Never called."""
+
+    @birthday.subcommand(description="Set your birthday month and day for birthday fun!")
+    async def set(
+        self,
+        interaction: nextcord.Interaction,
+        month: int = nextcord.SlashOption(required=True, min_value=1, max_value=12, description="Your birth month."),
+        day: int = nextcord.SlashOption(required=True, min_value=1, max_value=31, description="Your birth day."),
+    ) -> None:
+        """
+        Set a user's birthday in the database. If birthday is today, adds to the birthday_list.
+
+        Args:
+            interaction (nextcord.Interaction): Interaction that invoked the command.
+            month (int, optional): The month a user was born. Is SlashOption.
+            day (int, optional): The day a user was born. Is SlashOption.
+
+        """
+        # Ensure that a person used the command.
+        if interaction.user is None:
+            return
+
+        await interaction.response.defer(ephemeral=True)
+
+        # check if valid day
+        today = datetime.now(tz=UTC)
+        try:
+            birthday = datetime(today.year, month, day, tzinfo=UTC)
+        except ValueError:
+            await interaction.followup.send(f"Invalid date: {month}/{day}.", ephemeral=True)
+            return
+
+        # If the birthday is today, add to birthday_list
+        if today.date() == birthday.date():
+            birthday_list.append(interaction.user.id)
+
+        new_birthday = UserBirthday(user_id=interaction.user.id, month=month, day=day)
+        with Session(engine) as session:
+            stmt = select(UserBirthday).where(UserBirthday.user_id == interaction.user.id)
+            if (new_birthday := session.scalar(stmt)) is None:
+                new_birthday = UserBirthday(user_id=interaction.user.id, month=month, day=day)
+                session.add(new_birthday)
+            else:
+                new_birthday.month = month
+                new_birthday.day = day
+            session.commit()
+
+        await interaction.followup.send(f"Birthday set to {month}/{day}.", ephemeral=True)